Knowing nothing about gyro copter, what is that frame section that leads fwd from the wheels? Other M16 don't seem to have that? Is it part of the suspension to accommodate the bigger wheels?

The 'rail' along the side is a custom step as the gyro is so high with the tyre mod. The custom nose wheel assembly was made up partly in the USA and further design and engineering was carried out in NZ to fit the assembly to the frame to accommodate the much larger Carlisle nose wheel tyre.

See comparisons to show different sizes below.

Kiwijungleman's day job (PIC) is flying Erickson Skycrane in Peru and other country's and other interesting helicopters.

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